You may need to fill in the SA906 Trust and Estate Non-Residence form if in the tax year you consider the trust or estate to be any of the following:
Trust and Estate Non-Residence etc. form SA906 can be activated within the software if you have ticked the 'Yes' box in Q6 of Step 2 of the SA900 Trust and Estate Tax Return. HMRC guidance notes on SA906 provide further information in assisting you with the completion of foreign income form.